RE: Scat Cat pic
I probably build a dozen of those over the years. I still have one left.... used for fun flying and occational combat... right now flying with an old ST29 for power.
Design flys great. Was the Q-500 'standard' for a number of years. Good, stable, reliable, and pretty tough.
Make sure to fiberglass the firewall onto the airframe.
Glass above and below the torque rod entry on the ailerons - inch wide is fine... and be sure to epoxy the torque rod tails into the ailerons during assembly.
I recommend not using the forward wing dowels. Add a pair of bolts. 10-24 size is fine. If you stay with dowels, it should be ok... just do not do many agressive outside loops.
Tends to come out noseheavy with current type ABC 40-46 size engines. Keep that in mind with battery/servo placement.
CG set at 2.3"
Not much else ... enjoy it !